A square wall clock with a matt black finish. The minimalist dial is measured by linear hands behind a glass lens.We recommend the use of known brand alkaline batteries, new and in date. Poor quality or previously used batteries may cause your clock to lose time or stop. Please ensure you insert the batteries the correct way around, following the symbols in the battery compartment. Make sure batteries are replaced regularly to maintain optimum performance and reduce the risk of battery leakage and corrosion. As a general rule larger clocks with longer heavier hands will use more batteries as they consume more power.